Setting device for time fuses



4 Sheets-$het 1 Filed April 12, 1927 H 58%, i N. E. METHLIN SETTING DEVICE FOR TIME FUSES Filed vApril 12, 1927 4 Sheets-Sheet 3 Aug. 14, 1928. 1,680,902

N. E. METHLIN SETTING DEVICE FOR TIME FUSES Filed April 12, 1927 4 Sheets-Sheet 4 Patented Aug. 14,1928.

NIcoL sZEiuIL EN METHLINQ.on. minis, r nauon'e'ssienonro sc NnInER a cm.

1 or lARIS, nnancn, A'nIM TED' JOINT street: co vrnAnY on remen.

" sn'r'rine nnvicnia on fuses.

"A neati n e d mail 2,1927; Serial No.183 161,and iaFran'eeIYIay'iEJ, 1926.

. The subject of f is a Setting ldeviceafor time fuses which 'is more 'parflticularly. adapted for use fin combination with a quickfirmg gun.

It is known that the setting' of time fuses of the'known type comprising a time ring which is movable singularly relatively to a I .fixed mark' onz the projectile which -mar-k is :mostusually engravedupon 'a-fiXed time ring, necessitates, for each setting, two consecutive'. angular displacements which areloadthe-"projectile"into 'the bore ofthegun efi'ected by the gun server who makesuse of the setting device.

,. The gun serverzfirst ofall displaces,

through an angle varylng accord ng'to the range, a inemberof the setting device before 7 engaging the fuse therein then he manipuclates angularly anothermember of thesett ng device in order toe-carry alonga stud provided on the movable! time ring, producing arotatifon; of thefprojectile and of the fixed stud; -These operations take up-a great 'deal of time and moieoveryinclude a movement'of rotation of the projectile.

The device if'ormingthesubject of the in-' vent-ion permits :the 'fusesetting'ito :be effected 'with much greater speed: without necessitating any movementr of rotation of the projectile;

,According 'tothe invention the angular displacement-bf the movable time ring only is obtained by guiding this ring. alon e helical generatingline of the setting device,

the magnitude of this displacement: being limited. the preliminary rectilinean'dis placement of a stopgwhicli'i displacement varies according'tothe-range. chosen: 1 v

V The setting deviceconstructed' soas'to em- I body these essential featuresis; preferably,

arrangedin-such a way thatthe displace me'nt .oflthe movable stop isflefiected bya gunserver who for this purpose, 'actuates a vtransmission system by means ofa which he simply brings a reference; mark into. agree meme with the particular range or altitude curve chosen, wh1ch curves are traced upon a rotatable graphcarrying drumthe: movements of which areItied to those-of; the elevating mechanismof thegum i Sliding guide in thebody of the. settin g1 device, the setting ;being effected: when: the inward barrel.

:isfi1lu'strated by way of example in the acagainst aircraft. The figure shows the con- ,respectively.L'v

movement is stoppedupon encounter with the conditions, -be"'-given thefwhole of the/Work its fuse thus set and proceed immediately to -.A. practical embodiment of "the invention companying drawingsin which:

Fig. 1 is an elevation showingja general arrangementof the setting device and the mechanisms connected to the latter, mounted upon the gun carriage of a gun for firing nec'tion between the mechanism serving for producing the displacements of the lmovable" *stop and-one ofthe trunnions of the cradle, v

the latter being itself movable, in the'known manner, by meansof the elevating mechan1sm.'

'iFig. 2 is a plan ing to Fig. 1.2 r I Figs. 3yand 3? shoW in sectional'elevation detail 01 the setting'fdeviceproper to a largerscale. v

view of apart correspondmovable stop, the po'siti'on-oi Which-is itself r adjusted independently of the'projectile.

In fact,"'a' gun server. mayfunder' these 60 "of; setting the fuse andfloading the-projecf, tile into" the gun and in order to set the fuse he will sim ly have to push the projectile -into the setting "device'until jaj 's't'op' 'is'fen countered; then withdraw the projectile with as I Q Fig. tis adiagrammatic-plan section of a part,*the section being taken along the line" 4.4Qin F ig. 3, showiiig-i the parts of the sleeve-box in Lwhich engage the fixed time rings-and the movable time ring-of {chef-fuse.

i'Fig; 5 isi ag developed and diagrammatic sectionof a part takenfalong 'the lin'e5-5 inF-ig. 4., z

4 F ig. 6 is a side elevation ofa part of the arrangcment shown inFig. 1.

:Fig. risasectiona1 elevation takenalong I I theCline-7 i7 in Fig. 1;; The setting device proper comprises a settingfdevice body A which may be mount ed inany suitable place uponthe gun car-- riage-and in the example shown, is carried by a platform or isaddle 13' (Figs; 1 and:

forming ia top carriage and adapted, in the riage rofany. known type.

known manner. to turn upon alower "car- In thebody-A"ot the seain-gnevic is formed aihelical guide A which semester;

I gui dingithe 3 member 0* vVwhich}.carries along,

I in its movement-the stiiddior'med upon the b emmuni e g t inle ion' i h .pre:

t ecting stiid ([may, for exam lqbe formed i y a roller carried upon"a.,ring 'G forming one of the parts of a box n which 7 tho'lnose of the projectile ispl'a'cedk" This box comprises three pertstwo of whichgE,

are fixed one of these parts F "acts as a lodgment for the nose of the projectile or,

more jexaetly, the -fuse body, {end adapted i butby fln o qit frq lfikeelfag ins the adjustable. stop, G; the other ffixe'd fpart E co nprises,a; crown of notches e to en I gaging vith the. stud h which forms afrproij'ei tion upon the fixed timelring lHj of the} Thering'C forms a member'forfcom-f municating a movementjo thegstud d of the rnoveble time ring D it is I disposed between t the two fixeclparts 1E, A-return spring "I,

is cured at oneflend i to Ythe'ringfG-end-et of the setting device." 4.

notches 0- for engaging {with the. sti d id 70f .the movable, timering D-.. i

As shoivn-,i n I -igsi 4;"andf5 thestiids d 'are trapez'oidal in shape with the larger -hase' of the trapezium .on the outside and --t-hey';engage v easily betweenithe. correspondinglnotehes, the spacebetween theselbeing correspondin trapezoidal-shape; I I 7 Thehody of the setti device provides a longitudinalguide, by means of agroove A, fora rack g formed'npon the cylinder" "G, the inner edge G of which is adapted to form-ast0p,', theposition of which :ca n be 7 adjusted, for the inner face ofthelptirt F of the. sleeve box. 1 The rackg engages the 1i ay,be o arii-i'ed jjipon the body teA of the setting device, jwhich pinion forms one of the} elements of transmission system teeth [ofa, pinion the (shaft of which i +1 ++KLK+K-K t ap ed a O e ect atedlby a handwheeltKh" Upon one of with at wheel Q which is integral or virtu I ally integral with one-ofthe trunnions R of the oradlerof the gun, A 4

A spring S presses at one' endfegainst. the buffer f formed by'the sleeve-box a nd,"at the otherend against the end'f'otthe socket Gfupthe jmovable ring the otherend 2' to the part E. The two'jpalrts 5 V -E, 11 ;;are .inaclefrigid with: eachother by a' a '-key guided -i;n;a grooye afin the-body A The ringtl.'s1,p r0vided with 51 crown of ri'ng D, Zthroi gh; a

on whichrisprovidecltthe-raek 'g and inner V 7 {face G jofI- vhichfOrms an a'djiistablesto r I -m0vab1e time ring D of the fuse. {IthlS HlQlTQ m gun server actuating-the hzindwheel IQ- "has to keep, tli e needle Ltcontini-ipjlly on the range u -Ye Qidf [the which has been 'chosen, which drum itself moves auto mz tieally ,withthe fcradle during 3 the elev'atingEof th'e gu n barrel. The displacement of-the; -'l 1 andwh e e1 K produces through the transmission gear ending in IQ the displece ,m'ent'of thevmekg ancllc'onseqlientlyiof the lstop-GFEwhich occupies at all moments the required position for I-lproducing git-suitable setting of the fuse. of the projeetile whi'eh 'is v I .s0' i The g-un server-whohas to meke'thisjsiet V V tingengages"tlieujprojeetil.in the "sleeve-f bOX;E%CIF-L Thelstudshanddwhich'are lop'posite each other thus "engage respectively the one hyin-aanotch."ebtthe fixed part E r to be loaded into the gun.

.of thejsboxendit-he other d"ini: 1 no t ch o i o f into the bodyflof the'fuse setting device, thus compressing the?{spring S; The-projectile; in being'engag'ed in the b'0x', ,c a-nses a safety device shown in ;Fig: *3 to be disengaged; -.T-he noseof. the fiisegbody pi'lshesfoiitwards" a lever Tgone end of which engages in an jerifice ff yformin'g a catch, o'f part FQf ,the; b x; it" is pivotally connected at it I 'nd to one of thearm of "rockinglever T .,'TF', theother airn'i 'offwhichispivotally connected to t bolt T which when at The gun' rserver 'at the same'itime as he slips the projectile into the ,box 'pushes it I rest is 'drivento the a'ction of :t'spiral' spring Tqcin'to a .recess a formed in the I 'A t of the fuse setting-device.

holds the sleeve-box i a stationary posiy thefarrangement The projectilegin being slippedjintolthe 105 formed the projectile iind't he s leeve-bojx* produces, "on a cc ojunt of the engagement of thezrrollerv -C inthe-gt iding' gro ve A the angul'ardisplacement ofthe' movable time coiinteffbetweenfffjand'G fi f V V Whe'n th server in pushing ii 'lsthe projectile; meets the-resistance of t h e stop i a g e li y R 7 1 inediatly; producing the expansion of "the 1 springiS the tension" of which i s insufficient to turn; the sleeve-box rotitte' b ack the arrangement formed lbyaflt'he ring G iind' the l time ring Biit'assoon'as the st 'udsidzindij '1:

h are disengaged from thef-notchesb and; e,

' the-spring Scan expandandit then retu rns the-b0xE QIF"into its initial position," 5 'andthe' roller C whi'ch' is' compelled to fol low the groove 1P;isi itslfreturnedinto its initial-position. f

1' As 'will be seen; the gun server iwhoefiects I the setting can introduce the projectile into the sleeve-box without having to consider the position of thez st'uds h and-d relatively drawal, place immediately'in' thechainber.

to the notched crowns. I The said gun server has simply and solely; to 'push in and withdraw'the'projectile 'vvhi'ch he can, after withof the gun barrel if'rthe fuse setting device is, as is the case in the example shown, suitably arran'ged near the breech. I

, .The spring I which is compressed during Y j the displacement ofthe roller C =towards the St p 'G expands during the reverse. return movementand. ensures a'perfectbearingiof the rollerv upon oneof the sides of during'this movement. i

;Having now particularly described and r ascertained the nature of my said invention and in 'what manner the-same i'sito be" per formed,'I declare that what I claim is 1. In apparatus of I the"class de'scribed,i the combination ofa body, a member displac'eable therein andsh'apedto fitthe nose of a projectile, said member comprising ,a rotat 1 able partadapted to engage the fuse-setting 'mechanism of said projectile, and means op- "eratively connecting 'sai'd'bod-y .and rotatable part to cause rotation ofthe latter'ondisa placement of saidmember. 1

"2. A; fuSe Sett-ing device comprising a body,-

displaceable' member in said body comprising two jparts'one of which is rotat ,ablefrelative to the other,said parts-being shaped to receiver a; projectile, and motion converting means interconnecting said body anfd' rotatable part-5 whereby displacement of said member causes rotation of said part5? -3.- In a fuse-setting device, the combi Hanover ra 'projectile receiving jmember adapted to be displaced on inserting a pro.-

jecti'le therein,- saidmember comprising means for engaging the noseof said projectile and means forengaglng fuse-setting mechanism, andmotion-converting means to i convert displacement of said member 1nto rotatlon of s'ald last-named means.

r 4 A' fuse-setting 7 device comprising in Y a combination a body, a displaceable member Y into rotationof said rotatable part, and a in said body comprisingtwo parts one of which is rotatable relative tothe other, said parts being adapted to receive a projectile, means converting motion of said :member stop limiting displacement of said member. v 5. A device of the class described comprising in combination -a body, a displaceable 1 member in said body comprising two parts one of which is" rotatable relative to the other, said parts being shaped to receive a projectile, means converting linear motion of said member into rotation ofsaid rotatable part, a stop limiting displacement of said member,and means adjusting said stop to a desired position; i j Y Y 3 .7 7 r 6. A device of the class described compris-.

the groove her, and means limiting the displacement of said'member.

i 7. A device of theclass' described compris ing* in combination v a body, a displaceable m'emberin said body comprising twoparts one of -which is rotatable relative' 'tothe other, said parts being shaped T to receive a projectile, and helical guide meansfinter posed between said body and said; displaceable member/to Cariss combined linearfanfd rotarymovement of rotatable part -.rela'- ti've to' said body. j' r I ,8.-In a 'fuse-settingjdevice, thecombinetion r a body, a' displac'eable member there in comprising three parts shaped t'o receive a trim carrying projectile, one ofsaid parts being'rotatable' relative to the others, a helijcal guide interposed between said rotatable part and'='said*body,' and straight guides in terposed bet-Ween said other parts and said body' whereby displacement of said-member canses rotation ofrsaid rotatable parts relative to said'other part-* 9'.T In =fuse-settingdevice, the" ombine; tion of a body, a di'splac'eablefmember there v in comprising three parts 'shaped; to receive a-fusecarrying projectile,'-one of's aid parts being'rotatable relative to the oth'ers;"a heli' cal guide interposed between said rotatable.

body," and a st'op' to simultaneously limit the displacement of' said member; a d the rota tion ofsaidrotatable'part: 1091s a: fuse setting device, t

j halos e cembiim 1 tion of avbody, a displacement member there-1 in comprising three parts shaped to receive a fuse carrying projectile; one of said partsg V being rotatable relative to theothers," resilient means opposing'displacementof said member, a. helical guide interposed between parts and said body, .'vvhereby displacement of said member causes rotationof said rotatable' part relativeto said other parts.

11, In a fuse-setting device, 'thecombination of a body, a displaceable member there: in comprising-three part-s shaped to receive a 'fuse carrying projectile, one'ofsaid parts U being. rotatable relative to the others, j resilient means normally opposing displacement of said member, ahelical'guide interposed between said rotatable part'and said causes rotation of said rotatable part rela-' "said rotatable part and said a body, and

straight guides interposed between said other body, whereby displacement of said member tive to saidother parts, straight guides in-" terposed-between said otherparts and said body, resilient means normallyropposing ro- 100 panama-said bodyfstraightguides inter f posedjbetween-saidother parts-and said i tationtofsaid rotatable palft and a stopj'to simultaneously limit the displacement of said member and the rotation of said parts 7 #12 111 a fuse-setting-device, thecombina-g tionof a substantially cylindrical body, having :ahelical groove on the inner oface there of,'a member displaceablein saidbody and' comprising three parts one ofwhich" ijs' ro-' tatable relative to {the other parts, a 'px ojec'-' tiona on said :rotatable part2 engaging said i groove, and stop "normally preventing l displacement of saidmembjer and adapted tobe said device.

withdrawn onwinseittionz-of a projectile into 1 Y v i13';'In a; device of I the iclass combination ot a [siibs tanti ally cylindrical casing; comprising two telescopingpar'ts, -;a i i member longitudinally displaceabl'ey in' said casing shaped to receive the nose of a;

' fuselcarryingpyojectile; resilient means op-- 1 posing displacement of said member, I a stop normally ,;preventingf-the 'displ 'aeement: of; said member; and adapted to be, Withdrawn on insertion of a proje'ctile intoisaid deyic'e 1 said member comprising non-rotatablenieans '1 engaging the fixed :parts of ;the. f lfse setting;

mechanism and relatively rotatable: means adapted'to en'gage-jthemotataible partsof said fuse-setting mechanism a helical groove in 13118 1111181 faee of said'lcasing and a px'tos ect1on' on- SQJCl Trotatable means gengagmg said-groove, whereby the insertionof: a IPIQ- jectile into said device displaces said amem Q eri' n m' se IO iOI'IV of said rotatable l eth fuse. 1 Y Y 414.1 '-In- 'adevice of; lie class: i

combination of a substantially cylindrical casi g c p s W e c ping P s- 1 membe g therein adapted to. engage; the nose.

V 2 inglby 'the msertion of a p 'ojectile'therein,"

of a projectile anddisplapeableimsaid c'asfuncfti'onof thee range. V z h lass e r 1 the combination of a fbody, a displaceable f j member .in 's a i d body comprising two parts one of which [is,rotatablewrelatiye; to the;

,tion of theqrangef a h o; v

'is'Qf t c ss dese b mth combination of a' -zbody, a displaceablemem; ber'in said bodyjcomptisingjtwo partsgone. of fwyhieh is rotatable'relatigetovthe other, said' Par e ng h ped td lB Y P j c i e 'inotion-converting 'means 3 to (convert; disresilient 1 means normally opposing'snch I dis;-

pla eme t; ai m be a p smg 0 r rotatable means to engagethe nose of the r V projectile, fa; non-rotatable having a series of notches on its inner periphery-lo ng ez he fiX mbP2 h fi er t in me h ni andr-au ta a l rin h i notches oniit s inner peifiphery to engage the rotatablepart-s of said fuse-setting mecha nisni, a lug on gsaidirotatable rin'g engagin'g a; helicalgi'oovezin said casing, resilient" 1 means normally opposing rotation of id rat ta l' i g; nd e ns o I dj in he innei telescopic part 0f said a 'sing-coasi 'a 15. In" apparatus of other, said partsfbeingjshaped to receive a 'p tojectile, motion-converting. me an s; cone.

v t d sp cem nt" 9 i e b rinti rotation' oi said; rotatable par't, a stop totlimit displacement of member; and means automatically adjusting said' stop as'a fllHC'? In aPPw placementfoflsaidj member -into fll'ofifltion of said rotatab le part, a stop to limit (displace- 

